*HEADING
COMPOSITE SHELL TEMPERATURE LOADS: S3RT
See chapter 5.1.24 of Verification Manual

Analytical:

The temperature at the bottom of layer 1 is 425. 
The temperature at the top of layer 1 and the bottom of layer 2 is 373.2.
The temperature at the top of layer 2 and the bottom of layer 3 is 336.8
The temperature/field variable at the top of layer 3 is 287.5

Numerical solution should be almost exact (less than 1e-2% relative error)
There is a linear variation of temperature between the 
top and bottom of each layer.

The stresse were compared to the STD solution (xtmpcss3.inp):

Mises should be about: 1.8 e+4 at the bottom of layer 1
MisesStress should be about: 1.2 e+4 at the Top of layer 3
*NODE
1, 300.,0.,0.
17, 300.,0.,150.
401, 900.,0.,0.
417, 900.,0.,150.
*NGEN,NSET=LOADB
1,17
*NGEN,NSET=BND3
401,417
*NGEN,NSET=BND2
1,401,100
*NGEN,NSET=BND4
17,417,100
*NFILL,NSET=ALL
BND2,BND4,4,4
*NSET,NSET=QA_TEST
ALL
*ELEMENT,TYPE=S3RT, ELSET=EALL
1,1,5,105
2,1,105,101
*ELGEN,ELSET=ALELL
1,4,4,2,4,100,8
2,4,4,2,4,100,8
*SHELL SECTION,COMPOSITE, ELSET=ALELL,TEMP=3
0.9,3,MAT1
1.9,3,MAT2
1.2,3,MAT3
*MATERIAL,NAME=MAT1
*CONDUCTIVITY
5., 
*specific heat
0.11,
*density
1100.1,
*ELASTIC
3.0E6,0.3
*EXPANSION
1E-5, 
*MATERIAL,NAME=MAT2
*CONDUCTIVITY
15., 
*specific heat
0.12,
*density
1100.2,
*ELASTIC
3.0E6,0.3
*EXPANSION
1E-5, 
*MATERIAL,NAME=MAT3
*CONDUCTIVITY
7., 
*specific heat
0.13,
*density
1100.3,
*ELASTIC
3.0E6,0.3
*EXPANSION
1E-5, 
*BOUNDARY
ALL,ENCASTRE
*Amplitude,name=ramp, definition=smooth step
0,0,1000.0,1.0
*STEP
*Dynamic temperature-displacement,explicit
,5000.0
*FILM,AMPLITUDE=RAMP
ALELL,FNEG,1000.,.5
ALELL,FPOS,0.,1.
*OUTPUT,FIELD
*NODE OUTPUT
NT,
*Element Output
S
*OUTPUT,HISTORY
*NODE OUTPUT,NSET=ALL
NT,
*OUTPUT,FIELD,NUM=4
*NODE OUTPUT,NSET=QA_TEST
NT,
*END STEP